Saturday, March 24, 2018

It comprises Wollaston, Ildefonso, Terhalten and Diego Ramírez Islands, and the surrounding oceanic area. These islands are noteworthy as breeding sites for seabirds and marine mammals and are within the boundaries of the Cape Horn Biosphere Reserve. (Reserva de la Biósfera Cabo de Hornos). The confluence of water masses important for regulating global climate, such as the sub-surface Antarctic waters and the West Wind Drift waters, takes place in this region.


Conservation Status



Chilean Territorial Sea and Exclusive Economic Zone. Chilean Antarctic and Magellan Region (Region de Magallanes y Antartica Chilena), Chilean Antarctic Province, Comuna de Cabo de Hornos.

Biogeographical Region

Temperate seas of South America. Magellanic Province. Ecoregion: Channels and Fjords of Southern Chile.


28.000 km2

Types of Habitats

Heterogenous islands and coastal areas exposed to different oceanographic regimes. Pelagic and benthic marine shelf and shelf-break environments. Brown algae beds and belts.

Species Richness

28 marine mammal species; 74 waterfowl and seabird species.

Main Uses

Artisanal fishing for invertebrates and industrial fishing for Patagonian toothfish, Patagonian grenadier and southern blue whiting. The salmon farming industry has shown potential interest in moving into the area.


No direct real threats are known. Potential impacts of industrial fishing and unregulated tourism have not been evaluated.

Management - Main Government Bodies

Ministerio del Medio Ambiente, Subsecretaría de Pesca (SUBPESCA), Servicio Nacional de Pesca (SERNAPESCA), Dirección General del Territorio Marítimo y de Marina Mercante (DIRECTEMAR), Armada de Chile, Ministerio de Bienes Nacionales, Corporación Nacional Forestal (CONAF), Gobernación Provincial Ant‡rtica Chilena, Ilustre Municipalidad de Cabo de Hornos.

Level of Protection

The Cape Horn National Park and Cape Horn Biosphere Reserve  (Parque Nacional Cabo de Hornos y la Reserva Biósfera de Cabo de Hornos) do not encompass marine environments.


Southern Fulmar © Carlos Silva-Quintas

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